Add WiFi toggle prompts - framework

If permission review is enabled toggling WiFi on or off
results in a user prompt to collect a consent. This applies
only to legacy apps, i.e. ones that don't support runtime
permissions as they target SDK 22.

bug:28715749

Change-Id: I020601e208c0736005bcabc7b7b77b96eee45b03
(cherry picked from commit d3663c04)